I am admittedly unfamiliar with Spring Security but I am interested in possibly using it in a project. I am working an application that is using 2-way ssl for user authentication. Would Spring Security be compatible with this and allow me to create role based security in my application.
Sure, I assume by "2-way SSL", you mean the combination of standard server SSL and client certificate authentication. We definitely cover this in the book, in fact there is an entire chapter on configuring Spring Security 3 to use this method of authentication (also called X.509 authentication).
Role-based authorization can be configured independently of the authentication method you use, so you can definitely combine these two.